Siemens 3RV2021-4DA10 - 25 A, 3-Pole Circuit Breaker | AmpState

Introducing the Siemens 3RV2021-4DA10 – a compact, reliable 25A, 3-pole molded case circuit breaker designed to guard your electrical systems. Built for dependable branch circuit overcurrent and short-circuit protection, this unit is engineered to integrate seamlessly with panelboards and load centers from Siemens and compatible OEM systems.

• Compact molded case design optimizes panel space, making it easier to fit alongside other protective devices without crowding the enclosure.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding predictably to both overloads and short circuits, reducing nuisance trips and unplanned downtime.
• 3-pole configuration ideal for three-phase circuits, providing coordinated protection for multi-wire systems commonly found in commercial and light industrial environments.
• OEM-compatible designed to be used with matching Siemens load centers and panelboards, ensuring straightforward installation and reliable performance.
• Versatile application suitable for residential, commercial, and light-industrial protection needs where dependable branch circuit safety is essential.

Technical specifications

• Manufacturer: Siemens
• Part Number: 3RV2021-4DA10
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 25A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Use case scenarios

In a shared commercial panel or a light-industrial distribution assembly, the 3RV2021-4DA10 serves as a reliable line of defense for three-phase equipment, protecting motors, control panels, lighting runs, and other branch circuits from overloads and short circuits. Its compact footprint helps maximize panel density, while the precise thermal-magnetic trip mechanism minimizes unnecessary trips during temporary surge events. For residential applications that require three-phase protection or future expansion in a panelboard, this breaker fits smoothly into Siemens-compatible systems, maintaining consistent protection across the installation.

Why choose this breaker

Designed with compatibility and reliability in mind, the Siemens 3RV2021-4DA10 delivers predictable performance within Siemens OEM ecosystems and compatible load centers. Its combination of space-efficient design, a robust thermal-magnetic trip unit, and 3-pole protection makes it a practical choice for engineers and technicians aiming for durable, code-compliant branch circuit protection in a range of environments.